Ventilating apparatus



' W. J. MONTGOMERY VENTILATING APPARATUS Original Filed Oct. 28, 1922 Patented pr. 3',v 12928. i

STATESl PATENT or-Flc.

WILLIAM J. MONTGOMERY, orCOLUMBUS,

OHIO, lxssrcfrvolial To THE JEFFREY k:MANU- FACTURING COMPANY, A OORBORATION OFOHIO.

VENTILATING APPARATUS.

Uriginal application filed October 2S, 1922, Seriall No.` 597,669.-l Di'vidcd .and this application ied i January 21, 1926.

The ventilation of mines is usually effected dby currents of air flowing linto the mine` at oneL opening, circulating through the pas-Y sages of the mine, and escaping at another opening. These currents of air are com.

monly' produced bypower actuated devicesV l placed outside the mine and connected with its chambers by` a suitable air course. VTo guard against the interruption of Ventilating service due to break down of the air propelling devices, such apparatus is'installed 1n duplicate, one unit being held in reserve while the other is in active service, and valves are arranged to direct the flow of air to the preferred air propelling device.

The especial object of this invention is to provide an improved arrangement'of valvesV whereby the flow of air will be automatically switched from the idle to the active airpropeller when power is applied to one and cut olf from the other. Y

The means by which I attain this object` are fully set forth in the following-specification, and illustrated in the accompanying drawings of whichv 'Figure 1 is a horizontal section on the line 1- -1 of Figure 2 showing a two unitV air propeller installation arranged to force outsideV air into the air shaft of a mine,and i Figure 2 is a vertical section on the line 2-2 of Figure 1.

Like numerals refer to similar each gure of the drawings.

In the drawings the numeral 1 refers to an parts in air shaft which communicates with the passages of a mine, and the numeralf2 refers to a housing enclosing the mouth of they air shaft. Positioned within the housing 2, at opposite Isides of the mouth of the shaft 1,7are two air propelling devices which may be of any preferred construction adapted to induce a flow of air through the'shaft 1. For purposes of illustration I have shown two spiral'casings 8 andfiat each end of the Vhousing 2, and mounted within these casings arefan Vwheels 5 and 6 respectively, `The journals ofthe fan wheels are supported in bearings 7 and seriai No. ASavas.

'8 respectively,v Injthe sides of the casings' and 2l' are circular apertures -9 and' 10 through which .air maybe drawn upon operation of the 'fans and driven towardstlre mine shaft l.

To insure against interruptionofthe venti-` lating service of the mine, the yfan J5 is ar ranged ',toi'be actuated by an electricy motor` 11 connected with any convenient source of elec-V tric power supply, while the fan 6 is ydirectly connected with la steam engine 12 supplied i e5 It willbe observed 'that thehousing 2 for with steam from any convenientsour'ce.

the. oppositely disposed Vair current inducing means communicates with the shaft 1, forming, as here shown, `.horizontally disposedl conduits, each leading from the vertical shaft l to its particular air propeller. The specific arrangement of the housing and'conduits and an' shaft may, of course, be variedto meet conditions, and, obviously, lmore than two propeller units could be used if desired, the essential thing being that the connection between propeller units and the shaftgto be ventilated be suoli that the valveI mechanism or cut Oil' means of all inactive propeller units willfbe closed'by the' action ofthe active unit.

If one of these fans, asffor `example the fan 5, should be active and the 'other fan 6`idle, the current generated by fan 5 .would have `a tendency to escape through apertures 10 materially weakening or entirely interrupting, the flow of air into shaft l. To -prevent such short circuiting of the-air system of the mine, I provide a valve or-,flap 13 hinged at substantially` the central plane of the shaft 1 in such a manner that the draft induced by the fan 6 will swing the vvalve V13 towardsl the fan 5 to preventthesescape of air through its casing, as shown in Figure l and in `Figure 2 in full'lines. Fani being idle and fan 5y operative, flapl?) will take vthe position indicated in dotted lines in-Figure 2 thereby eectually preventing escape of the induced Iclaim.: n

11. In` combination with twoconjunctive current through ,aperturesy 10.

conduitsV having an outlet at'the point of juncture, a fan in each of saidv conduitsv selectively operable to'develop a Huid current therein, and valve means'at thepoint of juncture actuated automatically by the pres-H sure in one conduit to close the other conduit.l

2. In combination with Vtwo conjunctive vJQ conduits having an outlet at the point of juncture, a fan in each of said conduits for selectively developing a fluid current therein, and a hinged flap at the point of juncture actuated automatically 4by the pressure in one conduit to close the other conduit.

3. In an apparatus or the classdeseribed,

tliecombination of a substantially horizontal l housing communicating between its ends with a vertical air passage, alternately operable means on each side of: said vertical air passage individually clpableof'inducing Yan Aair current in Vthe vertical air passage and said housing', and a singlev valve mechanism pivotally .mounted substantially over the center `of the vertical air passage and responsive to the action of either one of said means to `@lose communication between the nessuna able ineans on each side of said vertical airV passage individually capableof inducing an air current in the air passage and said housing', and a single valve mechanism interposed between said air current inducing means and responsive to the action of either one of said means to close communication between the inactive air currentv inducing means and the vertical air passage.

V In testimony whereof my hand.

VILLIAM J. MONTGOMERY.

I have hereuntov set 

